IEC 61156-5:2020 pdf download – Multicore and symmetrical pair/quad cables for digital communications – Part 5: Symmetrical pair/quad cables with transmission characteristics up to 1 000 MHz – Horizontal floor wiring – Sectional specification.
6.4 Mechanical and dimensional characteristics and requirements
6.4.1 Dimensional requirements
The overall diameter of insulation,the nominal thickness of the sheath and the maximum overall diameter of the sheath are not specified,but shall be indicated in the relevant detail specification.
6.4.2 Elongation at break of the conductors
The minimum elongation of the conductor shall be not less than 8 %
6.4.3 Tensile strength of the insulation
The tensile strength of the insulation is not specified,but may be indicated in the relevant detail specification.
6.4.4 Elongation at break of the insulation
The minimum value of the elongation at break of the insulation shall be not less than 100 %
6.4.5 Adhesion of the insulation to the conductor
The adhesion of the insulation to the conductor is not specified,but may be indicated in the relevant detail specification.
6.4.6 Elongation at break of the sheath
The minimum value of the elongation at break of the sheath shall be not less than 100%。